Siphon measuring tank



Aug. 12, 1930. c. J. LAWSON SIPHON MEASURING TANK Filed Aug. 15, 1928 2Sheets-Sheet 1 m (in bv? v/Qb IUIIIIIIIU v art mante Charla: zlbaw5unattozwu I Au 12, 1930. c. J. LAWSON 1,772,903

SIPHON MEASURING TANK Filed Aug. 15. 1928 2 Sheets-Sheet 2 EJ151195zlLawsuz Fatented Aug. 12, 1930 CHARLES J. miwsomoreREENwLLEjM-IssIssIBrI .srrrron nnasuarive rank Application filed August:15, 1928. Serial No. aaasai.

V llhe invention'forming the subject matter of the presentapplication isa liquid measuring apparatus of 'the siphon air-break type, and isanr-imiprovement on the :a-pparatuszdisclosed inmy U. S.-;Paten-t No.1;,67 3,690, 11 une 12,1928. i The main object of the invention is toincrease'th'e accuracy of measurement of devices 'of this type and-tofmakethem ofgreater Jo simplicityand-ruggedness. V

. fltherlobjects of the klIlVQIiiJlOIl WlllrbGCOlTlB apparent aa-s thedetailed description thereof proceeds. a

In the drawings Fig. 1 is a side elevation of the apparatus with partsthereof broken away and shown in section; I 1

Fig. 2 is a horizontal section taken on the line 22 of Fig. 1;

Fig. 3 is a horizontal section taken on the line 33 of Fig. 1;

Fig. 4; is a fragmentary elevation of valve mechanism shown in Fig. 1;

Fig. 5 is a fragmentary sectional eleva- .25 tion of a modified form ofthe device; and

Fig. 6 is a fragmentary elevation of valve mechanism shown in Fig. 5.

Referring to Figs. 1 to 4:, reference numer al 1 designates a measuringtank, having an i inverted U-shaped siphon tube 2 extending through awaterand air-tight joint 3 into said tank. The inner leg 4 of said tube2 has the end thereof extending closely adjacent to bottom of tank 1;and the outer leg 5 has a 35 three-way valve 6 connected thereto at apoint below the bottom of the tank 1.

The valve 6 comprises a T-shaped casing 7 screwthreaded by one of itsarms to the lowerend of the leg 5 of the siphon 2; and the opposite endof the casing 7 is screwthreaded to a discharge pipe 8. A feed pipe 9,connected to any suitable source of supply, has one end thereofscrewthreaded to the remaining arm 10 of the valve 6.

The valve plug 11 provided with the T shaped passageway 12 is rotatablymounted in the casing 7 and has a handle 13 secured to one end thereofto rotate the valve plug to any desired position. As will be apparent 9from Fig. 1, in which the valve is shown in tankfilling position, thevalvemay be rotated eitherrto fill the tank-Lento .dischargeliquid fromthe tank 1 through thedischarge pipe-8.

In order to control'the' quantity of liquid discharged from thetank 1the latter isgprovided with a pipe supporting packing gland 13 securedto .the top 14 :of the tank at'the center thereof. A- surge pipe 15extends downwardly fromsaid gland 1-3 to a.pointnear the bottom of thetank 1 andis provided at its upperend with ascriesofslots lfidzsee Fig,3) -to..allow air 'to escape from the .upper end of the tank during thefilling theneof.

Extending laterally from the gland .13 is an air pipe :17 connected .toone end.o-f;an .aire escape valve 18,; .and .connecte d to (the-otherend of valve 1.8 isqa water gage-19 mounted on the outside of .the tank1 {and having iits lower end zcommunicatingwithitheLinterior ofsaidtank. V g j H u ,The wwater gage .l9'neejd notrbe extendedthroughout the length ;of tank '1, ibecausethe tank 1 mustabefilledEheforeeach measuring operation .and .the gage: 1911sonlynecessary 1 near thetopro ftarik zt-oyshow that-the latter/isbein'g-zfilled. Iherair-escape valve 118 isvnecessary to permit $13116escape of airlfrom the water gage .19 and from the-top of tank illinorderito-prevent'the. formation of air ,p' ockets whichv would affect.the accuracy of. measure ment of theidevice. v i

filidablyimounted in tlre gland;.13 risan air break .measuring I pipe:20, and this pipe I20 has apacking gland 21-atits upper end which formsan air tight, slidable ;connection tween pipe 20 and a fixed air pipe'22 "Ilhe air gpipei22rhasits 'npperiend fixed'to the top arm 2313faibracketi24 which-is suitably-fixed on :the itop '14 i of the tank 1;and the upper endofepipe :22 'is connected :toxabend' 25 of pipi'11g26connectedito: the eenteriofithetbend 2Trofithe=siphon 2. I i

= Th'e-pipesilo; 20 andi2 '2 'areiconcentric with each other. Thepipe 2Omerely formsiastelescopic continuationof p'ipe i222 in :order ;toregulate ithe fdistance :of the air-break controlling tlie measuremen tof liquid from the liquid in the tank from affecting the measurement ofliquid by the pipe 20. -In order to adjust the pipe vertically withinthe tank 1 the gland 21 is connected to the arm 28 of a bracket having arack arm 29 extending downwardly along the outside of the tank 1. Therack arm 29 is guided slidably in a guide 30 and is reciprocated in saidguide by means of a pinion 31 operated by a handle 32 which is rotatablymounted in a bearing 33 suitably fixed on the guide 30.

Extending laterally from the lower end of the rack arm 29 is anindicator 34; which reads on a scale 35 conveniently fixed on theoutside walls of the tank 1. As will be ap parent from Fig. 1 when thehandle 32 is rotated the pipe 20 will be adjusted up and down in thetank 1 to control the distance of its lower end relative to the top ofthe tank and'thereby control the break to the top of the siphon 2. r

' The specific details of the packing elements of the glands 2'1 and 13form nopart of the present invention and are not described in detailherein.

The modification shown in Fig. 5 merely illustrates a form in which thesiphon tube enters the top of the tank 1 instead of the side. In thisform of the invention two one-way valves 36 and 37 are arranged in theinlet and discharge pipes, respectively, connected to the outside arm 5of the siphon tube. These valves 36 and 37 are inter-controlled by meansof a linkage 38 so that one is closed when the other is opened. Theoperation of these valves is substantially the same as that of thethreeway valve shown inFig. 1 and one form may be substituted for theother as desired.

' The operation of the apparatus will be apparent to persons skilled inthe art and need not be described in detail herein. The arrangement ofthe adjustable measuring or air-break pipe in'the center of the tank isof the utmost importance, as this arrangement avoids inaccuracy ofmeasurement when the tank 1 is tilted. The air-escapevalve is of theusual check valve type which normally maintains the tank at atmosphericpressure, but closes the vent to prevent overflowing when the tank'isfull.

I claim: I

- 1. A tank, an inverted U-shaped siphon having one leg inside andthe-other leg outside of said tank, means connected to said other leg tocontrol the supply and discharge of liquid through said siphon to andfrom said tank, an air pipe liked to the top of said tank at the centerthereof, a pipe slidable through the top of said tank and over said airpipe toward and from the bottom of said tank, means for sliding saidsecond pipe, and piping connecting one end of said air pipe to the bendof said siphon.

2. A tank, an inverted U-shaped siphon connected to the tank, meansconnected to said siphon to control the supply and discharge of liquidthrough said siphon to and from said tank, a telescopic tube having onepart thereof fixed to the top of said tank and the other part slidablethrough the center of said top toward and from the bottom of said tank,means for sliding said other part over the first named part and throughsaid top, and a pipe connecting the top of the fixed part of saidtelescopic tube to the bend of said siphon.

3. A tank, an inverted U-shaped siphon connected to the tank, meansconnected to said siphon'to control the supply and discharge of liquidthrough said siphon to and from said tank, a packing gland fixed to thetop of said tank at the center thereof,-a pipe extending from said glandtoward the bottom of said tank and having an air vent adjacent to thetop of said tank, an air valve connected to said vent, a telescopic pipehaving one part fixed to the top of said tank and having another partslidable through said gland concentrically with the first named pipe,and a pipe connecting the top of the fixed part of said telescopic tubeto the bend of said siphon.

In testimony whereof I at'jx my signature.

CHARLES J. LAWSON.

